Projector and cartridge for combination visual and sound apparatus

ABSTRACT

A projector for showing the frames of a filmstrip in noncontinuous sequence in synchronism with an audio presentation contains a receptacle which pivots out of the projector for receiving an audio/visual cartridge containing both an endless audio tape removable subcartridge and a removable endlessfilmstrip holder. When the cartridge is inserted into the receptacle, the audio tape is moved to an operative position adjacent a tape head in the receptacle. When the receptacle with the cartridge is pivoted into the projector, the audio tape will be positioned adjacent a drive capstan in the projector and a pair of filmdrive sprocket wheels inthe projector will engage sprocket holes in the tape via respective slots in the cartridge. The filmholder contains a mirror and the cartridge contains a framing aperture such that the projection light beam can be projected through the filmstrip, via the mirror and the framing aperture, when the filmholder is inserted in the cartridge.

PROJECTOR AND CARTRIDGE FOR COMBINATION VISUAL AND SOUND APPARATUS [75]Inventor: Donald A. Youngblood, Chalfont, Pa. [73] Assignee: ElcoCorporation, Willow Grove, Pa. [22] Filed: Apr. 6, 1970 21App1.No.:25,805

Related US. Application Data [60] Division of Ser. No. 739,909, June14,- 1968, abandoned, which is a continuation of Ser. No. 535,149, March17, 1966, abandoned.

[52 us. cl... 353/15, 352/78 [51] Int. Cl.....-...., G03b 31/06, G03b23/02 [58 Field of 'searcll 353/15, 18 68;

[56] References Cited UNITED STATES PATENTS 3,252,372 5/1966 Gallina353/15 2,856,812 10/1958 Barron, Jr... 353/68 3,410,498 11/1968 Winkler352/78 3,316,806 5/1967 Coulson 353/15 [451 July 24, 1973 PrimaryExaminer-S. Clement Swisher Attorneye-D. R. Pressman 57 ABSTRACT Aprojector for showing the frames of a filmstrip in noncontinuoussequence in synchronism with an audio presentation contains a receptaclewhich pivots out of the projector for receiving an audio/visualcartridge containing both an endless audio tape removable subcartridgeand a removable endless-Filmstrip holder.

When the cartridge isinserted into the receptacle, the

through the filmstrip, via the mirror and the framing.

aperture, when. thefilmholder is inserted in the cartridge.

I 11 Claims, 37 Drawing Figures Patented July 24, 1973 I 1'7Sheets-Sheet l INVENTOR. I DONAL 0 A. ou/van 000 Patented July 24, 19733,748,031

17 Sheets-Sheet 2 Patented July 24, 1973 3,748,031

17 Sheets-Sheet 4 Q Fla/0 Patented July 24, 1973 17 Sheets-Sheet 6llVVE/VTOR DONALD A. YOU/VGfll 0 00 v Patented July 24, 1973 17Sheets-Sheet 7 QQ Nu \\b w v Q J m r O o O 0 9 vm Mo I 9Q NR m6? 9*: NqmNNQ N r \mm mm Nu o 33 9% N fi W 16 .wmw so I W RD .omw 9v mum ow No mmmmm NW hm hm NE mxm M3 M5 Q. .ohh .3. MN MW I INVENTOR. 00mm 4. raauau00o .Patenfed July 24, 1973 17 Sheets-Sheet 8 NQN use vmm IN V! TM DONAL0 A. VOUNGILO 00 Patented July 24, 1973 17 Sheets-Sheet 1 1 O u we 7N Wnv. MA 0 a M 0 Patented July 24, 1973 3,748,031

17 Sheets-Sheet 12 F/Ci26 475 454 I V 550 E 523 5/5 5? 462 422 4.56

490 45a 45? v 43? 430 A 504 486 INVENTOR.

. 556 434 29 DONALD A. you/van 000 Patented July 24, 1973 17Sheets-Sheet 14 Patented July 24, 1973 17 Sheets-Sheet 1 5 NI/5N TOROONAO 4. 70017604000 Patented July 24, 1973 17 Sheets-Sheet 16 hm Qt [NIEN 7'00.

DONAL 0 A. YOUNGIL 000 Patented Jul 24, 1973 17 Sheets-Sheet 1 7 NM UQ[NI W 7'08 PROJECTOR AND CARTRIDGE FOR COMBINATION VISUAL AND SOUNDAPPARATUS This is a division of parent application Ser. No. 739,909,filed June 14, 1968 (now abandoned), which parent application in turn isa continuation of grandparent application Ser. No. 535,149, filed March[7, 1966 (now abandoned). Three other divisional applications of saidparent application (Ser. Nos. 25,707, 3l,071, and 31,072 and filed oneven dates herewith) now US. Pat. Nos. 3,669,531, 3,695,746 and3,662,936 respectively describe inventions related to that of thepresent application.

This invention relates to an entertainment and/or educational device andmore particularly to a combination visual and sound apparatus.

Combination audio and visual devices are known to be an important toolof education as well as sales. That is, where untrained teachers orsalesmen are used, a device which combines a visual production with aaudio background enables the untrained to present to a po tential clientor student a complete and well prepared program.

These combination visual and sound apparatus, however, have beeninadequate because they are either inflexible or too difficult tooperate for an untrained worker. At present, those which are easy tooperate are so because they do not allow flexibility of programming.That is, in these devices, the apparatus is prepared in advance forpresentation of a sound and film program in the factory and thus areable to show only a single presentation. In order to show an additionalor alternate audio-visual presentation, it is necessary that theapparatus be transmitted to the factory which produced the apparatusoriginally and be returned with a different program. Or, the user wouldhave to have a plurality of such devices, one for each program.

Those devices which are flexible enough to present various programs aredifficult to operate. The operator of such a device must be given anintensive orientation as to the capabilities of the machine and must becapable of trouble shooting if any disorder results. These devicesnormally require threading of the film through the various guide andsprocket wheels in the device. If it is necessary to use a differentsound track with the prethreaded film, the operator is required tomanually synchronize the audio with visual presentation.

Therefore, there has been a recognized need for a,

combination visual and sound presentation device which is flexibleenough so that various programs may be shown in the device yet is souncomplicated to use that a relatively unskilled person may operate thedevice. For example where the device is to be used in various countries,the sound track should be easily interchangeable so that a plurality ofsound tracks may be used with a single film. However, the device must beeasy to operate.

It is, therefore, an object of this invention to provide a new andimproved combination visual and sound apparatus.

Another object of the invention is to provide a new and improved visualand sound apparatus which is both portable and easy to operate.

Another object of the invention is to provide a combination visual andsound apparatus which readily handles a plurality of programs and whichis adapted to easily interchange the audio and visual contents of aprogram.

Another object of the invention is to provide a new and improvedunitized tape and film cartridge which is easily inserted into a visualand sound apparatus.

Another object of the invention is to provide a new and improvedcombination visual and sound apparatus having a receptacle whichfacilitates handling of film and tape cartridges.

Another object of the invention is to provide in a combination visualand sound apparatus a new and improved cartridge and cartridgereceptacle therefor which is pivotable into and out of said apparatus tosnap the cartridge into place.

These and other objects of the present invention are achieved byproviding in a combination visual and sound apparatus, a cartridgehaving a first compartment for removably receiving a detechable magazinehaving mounted therein an endless coil of tape rotatably mounted for theproduction of sound, said cartridge having a separate second compartmentfor receiving an endless coil of film, said film adapted to be movablewithin said second compartment, said cartridge having an openingadjacent said film so that a single frame of said film may be positionedwithin said opening at a time, a pivotable cartridge receptacle mountedin said apparatus, a sound pickup means mounted in said receptacle, saidreceptacle being adapted to removably receive said cartridge, saidreceptacle including means for moving a portion of said tape into anoperative position adjacent said pickup means during insertion of saidcartridge, said apparatus including a sprocket wheel and a capstanmounted adjacent said pivotable receptacle, said sprocket wheel adaptedto engage said film when said receptacle is pivoted to a closedposition, said capstan adapted to be adjaeent said tape when saidreceptacle is closed and adapted to movably engage said tape when saidapparatus is in operation.

Other objects and many of the attendant advantages of this inventionwill be readily appreciated as the same becomes better understood byreference to the following detailed description when considered inconnection with the accompanying drawings wherein:

FIG. 1 is a perspective view of the combination visual and soundapparatus embodying the invention in a closed position;

FIG. 2 is a perspective view of the combination visual and soundapparatus embodying the invention in an open position for projection ona builtin screen;

FIG. 3 is a side elevational view of the rear side of the visual andsound apparatus;

FIG. 4 is an enlarged fragmentary sectional view taken along the line4-4 in FIG. I;

FIG. 5 is an enlarged fragmentary sectional view taken along the line5-5 in FIG. 2;

FIG. 6 is an enlarged fragmentary elevational view taken along the line6-6 in FIG. 5;

FIG. 7 is an enlarged fragmentary sectional view taken along the line7-7 in FIG. 6;

FIG. 8 is a sectional view taken along the line 8-8 in FIG. 5;

FIG. 9 is a sectional view similar to FIG. 5 with the combination visualand sound apparatus in a position for projection on a wall or screen;

FIG. 10 is a fragmentary side elevational view of the hood and screenwith parts shown in section for the purpose of clarity;

FIG. 11 is an enlarged fragmentary sectional view taken along the line11-11 in FIG.

FIG. 12 is an enlarged fragmentary sectional view taken along the line12-12 in FIG. 10; 7

FIG. 13 is an enlarged fragmentary sectional view taken along the line13-13 in FIG. 1;

FIG. 14 is an enlarged discontinuous fragmentary sectional view takenalong the line 14-14'in FIG. 14;

FIG. 15 is an enlarged sectional view taken along the line 15-15 in FIG.2;

FIG. 16 is a side elevational view taken along the line 16-16 in FIG. 2with the wall plate removed;

FIG. 17 is an enlarged sectional view taken along the line 17-17 in FIG.15;

FIG. 18 is a sectional view taken along the line 18-18 in FIG. 15;

FIG. 19 is an enlarged fragmentary sectional view taken along the line19-19 in FIG. 15;

FIG. 20 is an enlarged sectional view taken along the line 20-20 in FIG.16;

FIG. 21 is an enlarged sectional view taken along the line 21-21 in FIG.20;

FIG. 22 is an enlarged sectional view taken along the line 2222 in FIG.21;

FIG. 23 is an enlarged perspective view of the tape feed read-outassembly;

FIG. 24 is an enlarged perspective view of a unitized tape and filmcartridge embodying the invention;

FIG. 25 is an enlarged perspective view of an endless coil of film woundabout the film holder;

FIG. 26 is an enlarged sectional view taken along the line 2626 in FIG.24;

FIG. 27 is an enlarged sectional view taken along the line 27-27 in FIG.16;

FIG. 28 is an enlarged sectional view taken along the line 28-28 in FIG.24;

FIG. 29 is an enlarged sectional view taken along the line 29-29 in FIG.28;

FIG. 30 is an enlarged sectional view similar to FIG. 18 with thecartridge receptacle in an open position;

FIG. 31 is an enlarged sectional view taken along the line 31-31 in FIG.30;

FIG. 32 is an enlarged fragmentary sectional view taken along the line32-32 in FIG. 31;

FIG. 33 is an exploded perspective view of the cartridge receptacle andthe cartridge prior to insertion thereof;

FIG. 34 is a schematic block diagram of the interconnections between thevarious electrical and electronic components within the combinationvisual and sound apparatus;

FIG. 35 is a schematic diagram of the audio amplifier;

FIG. 36 is a schematic diagram of the tone amplifier; and

FIG. 37 is a schematic diagram of the power supply.

Referring now in greater detail to the various figures of the drawingwherein similar reference characters refer to similar parts, acombination visual and sound apparatus embodying the invention isgenerally shown at 30 in FIG. 1.

The outer body of the combination visual and sound apparatus is in heconfiguration of a small suitcase or attache case. The device includes ahandle 32 which facilitates carrying of the device. As best seen in FIG.2, when in use, the hood 34 for the screen assembly 36 is urgedoutwardly by springs provided in the walls thereof.

The remaining side wall 38 of the device 30 includes a cartridgereceptacle 40 which is pivotably mounted in the wall. When pivotedoutwardly as shown in FIG. 30 the receptacle 40 is adapted to receive acartridge 42 which is shown in FIG. 24. Cartridge 42 is adapted toremovably receive a film holder 44 and a tape maga zine 46. The filmholder 44 and tape magazine 46 are adapted to house an endless strip andan endless tape, respectively.

In order to insert cartridge 42, the receptacle 40 is pivoted out ofside wall 38 of device 30 and cartridge 42 is inserted in the receptacleas best shown in FIG. 33. As will be seen hereinafter, the receptacle 40includes means for exposing the tape in magazine 46 during insertion ofcartridge 42 in receptacle 40. After the cartridge 42 has beencompletely inserted into receptacle 40, the receptacle and cartridge arepivoted into side wall 38. The combination visual and sound apparatus isnow in position to be operated.

As best seen in FIGS. 1 and 2, a bank of switches 48 is provided at thetop of apparatus 30 for controlling the operation thereof. A rotary knob50 is provided for adjustment of the volume of the audio system byrotation thereof. An On-Off switch 52 is provided which is used to startor stop the operation of the device 30. A switch 54 is also included inbank 48 which selects the manner of advancing the film strip. Eitherautomatic or manual control of the advancement is selectable with switch54. For normal operation, the switch is pressed to its automaticposition. In automatic operation the film is advanced by the detectionof advance pulses from the sound tape. Manual control is provided sothat if no sound tape is provided, the film strip may be advancedmanually.

A switch 56 is provided which has a first portion entitled Hold whichwhen pressed prevents the advancement of the film strip so that theaudio portion of the program can catch up to the visual presentation.The other position of switch 56 is the Advance position which enablesthe film strip to be advanced so that it may catch up with the soundportion of the presentation. Thus the Hold-Advance switch 56 enablessynchronization between the visual and sound portion of the program.Further, the Advance portion of the switch may also be used to advancethe film strip manually when the switch 54 is in the. manual position.

The final switch 58 provided in bank 48 is the Eject switch which ismechanically linked to the pivotable receptacle 40 so that pressureapplied to said switch ejects said receptacle. That is, the receptacle40 is freed by the eject switch 58 to pivot out of wall 38 when theswitch is pressed.

To commence operation of the device 30, the On portion of switch 52 ispressed. When the On portion of switch 52 is pressed, the followingevents occur.

1. Lamp 60, which is best shown in FIG. 16, is energized therebyprojecting an image from the endless film in cartridge 42 on the back oftranslucent screen 61.

2. Solenoid 62, which is best seen in FIG. 15, is energized therebydrawing pressure roller 64 downwardly against sound tape 66 and pressesit against capstan 68.

3. Motor 70, which is best seen in FIG. 15, is also energized andthereby rotates capstan 68. Thus, sound tape 66 which is engaged betweenthe pressure roller 64 and the capstan is moved. As sound tape 66 moves

1. In a combination visual and sound apparatus for showing a programhaving a visual portion and a sound portion, a cartridge having a firstcompartment for removably receiving a magazine containing an endlessroll of audio tape and a second compartment for holding an endless loopof film such that said film can be advanced in frame-by-frame sequencewithin said second compartment, said second compartment having a windowat least as large as a single frame of said film, means for holding aportion of said film against said window, whereby a single frame of saidfilm at a time may be positioned adjacent said window and centered withrespect thereto. a movable cartridge receptacle mounted in saidapparatus, a sound pickup means mounted in said receptacle, saidreceptacle being adapted to removably receive said cartridge, saidreceptacle including means for moving a portion of said tape into anoperative position adjacent said pickup means during insertion of saidcartridge, said apparatus including a sprocket wheel and a capstanmounted adjacent said receptacle such that said sprocket wheel engagessaid film and said capstan is located adjacent said tape when saidreceptacle is moved to an operative position, said capstan beingarranged to movably engage said tape when said apparatus is inoperation, said cartridge including a pair of slotted openings adjacentsaid window thereof for providing access to said film by said sprocketwheel, said cartridge also including an opening in a side wall thereofso as to form an opening for said first compartment, said window andsaid slotted openings also being provided in said side wall thereof,said apparatus including a pressure roller and a pressure pad, saidmagazine including a recess in its outer surface adjacent said movableportion of said tape for receiving said pressure pad and pressure rollerfor urging said tape against said sound pickup head and said capstan,respectively, during operation of said apparatus, said apparatusincluding a pair of locating posts mounted adjacent said cartridgereceptacles, said magazine including a pair of locating openings in saidouter surface, whereby said locating posts will engage said locatingopenings to insure proper positioning of said cartridge when saidcartridge receptacle is moved into said apparatus.
 2. In a combinationvisual and sound apparatus for showing a program having a visual portionand a sound portion, a cartridge having a first compartment forremovably receiving a magazine containing an endless roll of audio tapeand a second compartment for holding an endless loop of film such thatsaid film can be advanced in frame-by-frame sequence within said secondcompartment, said second compartment having a window at least as largeas a single frame of said film, means for holding a portion of said filmagainst said window, whereby a single frame of said film at a time maybe positioned adjacent said window and centered with respect thereto, amovable cartridge receptacle mounted in said apparatus, a sound pickupmounted in said receptacle, said receptacle being adapted to removablyreceive said cartridge, said receptacle including means for moving aportion of said tape into an operative position adjacent said pickupmeans during insertion of said cartridge, said apparatus including asprocket wheel and a capstan mounted adjacent said receptacle such thatsaid sprocket wheel engages said film and said capstaN is locatedadjacent said tape when said receptacle is moved to an operativeposition, said capstan being arranged to movably engage said tape whensaid apparatus is in operation, said cartridge including a filmholdercomprising a film guiding means and a stem, said endless loop of filmbeing wound loosely so that said film is comprised of a coil portion anda loop portion, said loop portion emanating from the center of said coilportion and terminating on the outer loop of said coil portion, saidcoil portion being positioned over said stem and said loop portion beingpositioned around said film guiding means, said guiding means includinga recess having a mirror mounted therein and means for flattening aportion of said film adjacent one portion of said recess, said mirrorbeing positioned at substantially at 45* angle to the plane of said filmadjacent said recess such that a frame of said film within said portionthereof can be projected by directing a column of light through said oneportion of said recess and said frame of said film, said column of lightalso passing through another portion of said recess and being reflectedwithin said recess by said mirror, said second compartment arranged toremovably receive said filmholder so that said endless loop of film canbe completely enclosed in said second compartment.
 3. In a combinationvisual and sound apparatus for showing a program having a visual portionand a sound portion, a cartridge having a first compartment forremovably receiving a magazine containing an endless roll of audio tapeand a second compartment for holding an endless loop of film such thatsaid film can be advanced in frame-by-frame sequence within said secondcompartment, said second compartment having a window at least as largeas a single frame of said film, means for holding a portion of said filmagainst said window, whereby a single frame of said film at a time maybe positioned adjacent said window and centered with respect thereto, amovable cartridge receptacle mounted in said apparatus, a sound pickupmeans mounted in said receptacle, said receptacle being adapted toremovably said cartridge, said receptacle including means for moving aportion of said tape into an operative position adjacent said pickupmeans during insertion of said cartridge, said apparatus including asprocket wheel and a capstan mounted adjacent said receptacle such thatsaid sprocket wheel engages said film and said capstan is locatedadjacent said tape when said tape receptacle is moved to an operativeposition, said capstan being arranged to movably engage said tape whensaid apparatus is in operation, said cartridge including a filmholdercomprising a film guiding means and a stem, said endless loop of filmbeing wound loosely so that said film is comprised of a coil portion anda loop portion, said loop portion emanating from the center of said coilportion and terminating on the outer loop of said coil portion, saidcoil portion being positioned over said stem and said loop portion beingpositioned around said film guiding means, said filmholder including amirror, said guiding means including a recess having a mirror mountedtherein and means for flattening a portion of said film adjacent oneportion of said recess, said mirror being positioned at substantially at45* angle to the plane of said film adjacent said recess such that aframe of said film within said portion thereof can be projected bydirecting a column of light through one portion of said recess and saidframe of said flm, said column of light also passing through anotherportion of said recess and being reflected within said recess by saidmirror, said guiding means also including a spring clip mounted adjacentsaid mirror, said spring clip arranged to urge said film against saidwindow in said second compartment of said cartridge such that a portionof said film is flattened against said window for projection Of a beamof light therethrough, said guiding means further including spacedprojections on one side of said guiding means for aid in flattening andguiding said film adjacent said window, said projections each comprisinga groove arranged to accomodate the teeth of said sprocket wheel whensaid wheel engages said film.
 4. The invention of claim 3 wherein saidcartridge further includes a plurality of tabs which extend from thewalls thereof adjacent the opening forming said second compartment, saidfilm holder including a plurality of recesses in the periphery thereofwhereby said tabs and recesses may be aligned for removably receivingsaid film holder in said second compartment.
 5. The invention of claim 4wherein said tabs include beads disposed at the end thereof and saidrecesses include detents whereby insertion of said tabs into saidrecesses causes said beads to be snapped into said detents and therebysnaps the film holder into the second compartment.
 6. In a combinationvisual and sound apparatus for showing a program having a visual portionand a sound portion, a cartridge having a first compartment forremovably receiving a magazine containing an endless roll of audio tapeand a second compartment for holding an endless loop of film such thatsaid film can be advanced in frame-by-frame sequence within said secondcompartment, said second compartment having a window at least as largeas a single frame of said filmstrip, means for holding a portion of saidfilm against said window, whereby a single frame of said film at a timemay be positioned adjacent said window and centered with respectthereto, a movable cartridge receptacle mounted in said apparatus, asound pickup means mounted in said receptacle, said receptacle beingadapted to removably receive said cartridge, said receptacle includingmeans for moving a portion of said tape into an operative positionadjacent said pickup means during insertion of said cartridge, saidapparatus including a sprocket wheel and a capstan mounted adjacent saidreceptacle such that said sprocket wheel engages said film and saidcapstan is located adjacent said tape when said receptacle is moved toan operative position, said capstan being arranged to movably engagesaid tape when said apparatus is in operation, said sprocket wheel beingmechanically linked to a solenoid for rotation of said sprocket wheeland advancement of said film each time said solenoid is energized, saidsprocket wheel being rotatably mounted on an elongated shaft, said shafthaving a drive wheel rotatably mounted thereabout, an advance discmounted adjacent said drive wheel and rotatably mounted about a shaft, aspring mechanically linked to said drive wheel, said solenoid arrangedto rotate said drive wheel in a first direction and said spring arrangedto rotate said drive wheel in a second direction, said drive wheelarranged to rotate said advance disc when said drive wheel is rotated ina second direction, such that shaft and said sprocket wheel will also berotated by said advance disc.
 7. The invention of claim 6 wherein saidadvance disc is mounted adjacent a stopping finger, said stopping fingeradapted to prevent rotation of said advance disc after said advance dischas rotated a predetermined amount whereby said film is advanced asingle frame each time said advance disc is rotated by said drive wheel.8. The invention of claim 7 wherein said stopping finger is pivotablymounted adjacent said advance disce, said advance disc having aplurality of notches equally spaced about the periphery thereof, saidstopping finger adapted to be pivoted into and out of said notches ofsaid advance disc, said advance disc being locked rotationally againstmovement when said stopping finger is engaged in one of said notches, acam disc secured to said drive wheel, said cam disc adapted to pivotsaid stopping finger out of said notches when said drive wheel isrotated in said first diRection, whereby, said drive wheel frees saidstopping finger when rotated in said first direction and said advancedisc is rotated when said drive wheel is rotated in said seconddirection.
 9. The invention of claim 8 wherein said apparatus includesmeans for adjusting the frame of said film so that the image from only asingle frame is projected, said frame adjustment means comprising a knobwhich is secured to said shaft for rotation therewith, a drive conesecured to said advance disc, said cone adapted to be selectivelyengageable with said adjusting knob whereby said sprocket wheel may berotated for movement of said film by rotation of said knob afterdisengaging said knob from said cone.
 10. The invention of claim 9wherein said adjusting knob is axially slidable along said shaft, theshaft including an enlarged cylindrical member secured at the endadjacent said adjusting knob, a spring axially mounted on said shaftbetween said enlarged member and said adjusting knob, said springadapted to urge said adjusting knob into engagement with said drive coneso that said advance disc is mechanically secured to said shaft forrotation therewith when said cone and said knob are engaged.
 11. In acombination visual and sound apparatus for showing a program having avisual portion and a sound portion, a cartridge having first and secondcompartments for removably receiving, in said first compartment, amagazine having an endless roll of tape for the production of soundrotatably mounted therein and, in said second compartment, a filmholderhaving an endless loop of film movably mounted thereon, said secondcompartment having a window in position such that a portion of said filmwill lie adjacent said window when said filmholder is mounted therein,whereby any frame of said film may be positioned adjacent and centeredwith respect to said window, said second compartment containing a pairof slots on opposite sides of said window for providing access to thesprocket holes on said film, said apparatus containing a movablecartridge receptacle having sound pickup means, said receptacle arrangedto pivot out of a compartment of said apparatus and removably receivesaid cartridge, said receptacle including means for moving a portion ofsaid tape into an operative position adjacent said pickup means duringinsertion of said cartridge, said apparatus including a pair of sprocketwheels extending into said compartment and a capstan mounted adjacentsaid receptacle such that when said receptacle contains said cartridgeand is pivoted into said compartment of said apparatus, said capstanwill be located adjacent said tape and said sprocket wheels will extendthrough said slots on opposite sides of said window and engage saidsprocket holes of said film,